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Tổng cân nặng `5` đồ vật :
\(72\times5=360\left(kg\right)\)
Nếu thêm một đồ vật nữa thì cân nặng lúc này là :
`360+24=384(kg)`
TB mỗi đồ vật cân nặng :
`384:6=64` (kg)
Muốn dệt `120` cái áo trong `1` ngày, cần :
\(12\times3=36\) (công nhân)
Vậy muốn dệt `120` cái áo trong `2` ngày, cần :
`36:2=18` (công nhân)
Ex6. Câu bị động cầu khiến
1. I had my uncle paint my room last week.
I had my room painted last week.
2. She will have me wash the dishes tomorrow.
She will have the dishes washed tomorrow.
3. They have her tell the story again.
They have the story told again.
4. John gets his sister to clean his shirt.
John gets his shirt cleaned.
5. Anne had had a friend type her composition.
Anne had had her composition typed.
6. Rick will have a barber cut his hair.
Rick will have his hair cut.
7. I will get the dressmaker to make a new dress.
I will get a new dress made.
8. He got a mechanic to repair his car.
He got his car repaired.
9. We had a man take this photograph when we were on holiday last summer.
We had this photograph taken when we were on holiday last summer.
10. The Greens had a carpet cleaner clean their carpet.
The Greens had their carpet cleaned.
Số lượng số hạng của dãy trên là: (104 -2):3 + 1 = 34 + 1 = 35 (số hạng)
Tổng của dãy số: (2+104)x35:2 = 1855
Các số của dãy trên chia 3 dư 2. Do 107 chia 3 dư 2 nên 107 thuộc dãy trên
Exercise 2:
1. I started taking part in English club in April.
=> I have taken part in English club since April.
2. My sister began teaching English 20 years ago.
=> The first time my sister taught English was 20 years ago.
3. It began to rain half an hour ago.
=> It has been raining for half an hour.
4. They began to build this hotel a year ago.
=> They have built this hotel for a year.
5. He has had his breakfast since 7 o’clock.
=> He began having his breakfast at 7 o’clock.
6. Mr. Ba has talked to our teacher for an hour.
=> Mr. Ba began talking to our teacher an hour ago.
7. We started working here since August
=> The first time we worked here was in August.
8. I started writing this report a week ago.
=> I have written this report for a week.
1: I started being a member of the English club in April.
2: The first time my sister began teaching English was 20 years ago.
3: It started raining half an hour ago.
4: They have been building this hotel for a year.
5: He had his breakfast at 7 o'clock
6: Mr.Ba began talking to our teacher an hour ago
7: The first time I started working here was August
8: I have been writing this report for a week
dễ thế này mà.
1 I had my room painted by my uncle last week
2 she will have the dishes washed by my tomorrow
3 they have the story told again by her
4 John gets his shirt cleaned by his sister
5 Anne had had her composition typed by friend
6 Rick will have his hair cut by a barber
7 I will get a new dress made by the dressmaker
8 He got his car repaired by a mechanic
9 We had this photograph taken by a man when we were on holiday last summer
10 The Greens had their carpet cleaned by a carpet cleaner
1 C
2 D
3 D
4 D
1c 2d 3d 4d